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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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'No practical use' for 17-million digit prime number
http://www.bbc.co.uk/news/uk-21382663
Why is it only "thought" to be the largest prime number ever identified? -- Adam |
#2
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'No practical use' for 17-million digit prime number
"ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Who cares? Stupid American ****pigs. |
#3
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'No practical use' for 17-million digit prime number
Probably because its so bloody boring and they all went down the pub.
Brian "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? -- Adam -- From the laptop of |
#4
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'No practical use' for 17-million digit prime number
"ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because no one has claimed a larger one YET. |
#5
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'No practical use' for 17-million digit prime number
ARW wrote:
http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because an apprentice found it and you cannot verify if he foundit first? |
#6
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'No practical use' for 17-million digit prime number
In message , Rod Speed
writes "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because (large) prime numbers are used in all encryption systems. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. If someone has worked out how to do it, they won't shout about it because they'll be in control of everybody else's private information. Because no one has claimed a larger one YET. -- Nick (=----) |
#7
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'No practical use' for 17-million digit prime number
On Friday 08 February 2013 18:11 ARW wrote in uk.d-i-y:
http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? I'm guessing that it has not been independently verified? -- Tim Watts Personal Blog: http://www.dionic.net/tim/ If you are reading this from a web interface eg DIY Banter, DIY Forum or Google Groups, please be aware this is NOT a forum, and you are merely using a web portal to a USENET group. Many people block posters coming from web portals due to perceived SPAM or inaneness. For a better method of access, please see: http://wiki.diyfaq.org.uk/index.php?title=Usenet "She got her looks from her father. He's a plastic surgeon." |
#8
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'No practical use' for 17-million digit prime number
In message , Nick
writes In message , Rod Speed writes "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because (large) prime numbers are used in all encryption systems. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. If someone has worked out how to do it, they won't shout about it because they'll be in control of everybody else's private information. Because no one has claimed a larger one YET. I'm currently reading *The Music of the Primes* and wishing my maths were more robust. -- Tim Lamb |
#9
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'No practical use' for 17-million digit prime number
On 08/02/2013 19:31, Nick wrote:
Because (large) prime numbers are used in all encryption systems. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. If someone has worked out how to do it, they won't shout about it because they'll be in control of everybody else's private information. It likely is the largest one identified. If someone has found a fast way to factor large numbers they won't be interested in numbers bigger than encryption keys - so only a hundred or so digits. Andy |
#10
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'No practical use' for 17-million digit prime number
On 08/02/2013 19:31, Nick wrote:
In message , Rod Speed writes "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because (large) prime numbers are used in all encryption systems. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. Not sure how that answers the question! However its worth noting that practical encryption systems don't need need numbers with digits into the megabytes! -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#11
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'No practical use' for 17-million digit prime number
On 08/02/2013 19:29, Unbeliever wrote:
ARW wrote: http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because an apprentice found it and you cannot verify if he foundit first? Good old Unbeliever! |
#12
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'No practical use' for 17-million digit prime number
On Fri, 8 Feb 2013 18:11:11 -0000, "ARW"
wrote: http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? It was just lying around, waiting to be discovered? Feck me. |
#13
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'No practical use' for 17-million digit prime number
In message , John
Rumm writes On 08/02/2013 19:31, Nick wrote: In message , Rod Speed writes "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because (large) prime numbers are used in all encryption systems. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. Not sure how that answers the question! However its worth noting that practical encryption systems don't need need numbers with digits into the megabytes! Agreed I put that extremely badly, but if you know where the ones used for encryption are, then it's likely you know where they will find the next Mersenne prime as well. As you wouldn't tell anyone if you did know, I thought it answered the question. -- Nick (=----) |
#14
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'No practical use' for 17-million digit prime number
On Feb 8, 7:31*pm, Nick wrote:
Because (large) prime numbers are used in all encryption systems. If it's the 'largest known prime' it's probably a Mersenne prime (2^n-1) in which case it's of no relevance to encryption, and would explain its discoverer believing it to be of "no practical use". The largest known prime has almost always been a Mersenne prime "since the dawn of electronic computers": http://en.wikipedia.org/wiki/Prime_number Richard. http://www.rtrussell.co.uk/ |
#15
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'No practical use' for 17-million digit prime number
On Friday, February 8, 2013 7:31:34 PM UTC, Nick wrote:
In message , Rod Speed writes "ARW" wrote in message ... http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? Because somebody wanted to cover their arse just in case they hadn't checked the literature properly Because (large) prime numbers are used in all encryption systems. Not so. They aren't used in symmetric encryption (where the same key is used for encryption and decryption). They also aren't used in elliptic curve asymmetric encryption. Having said that, because of patents (spit) on elliptic curve cryptography, there is an awful lot of cryptography which depends on on prime numbers. These systems rely for security on no-one being able to predict where to find 'new' or existing primes. If someone has worked out how to do it, they won't shout about it because they'll be in control of everybody else's private information. That depends on who finds out how to predict where prime numbers are. Doing so would be Fields medal material (Nobel prize for mathematicians), so academics would publish like a shot. OTOH, if the discoverer works for NSA, GCHQ, Russian equivalent, Chinese equivalent, etc, they will will keep very sputum indeed. |
#16
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'No practical use' for 17-million digit prime number
On Saturday, February 9, 2013 8:14:55 PM UTC, Martin Bonner wrote:
On Friday, February 8, 2013 7:31:34 PM UTC, Nick wrote: Because (large) prime numbers are used in all encryption systems. Not so. They aren't used in symmetric encryption ... ... and subsequent messages show you obviously knew that. OTOH, my message may stop someone else getting confused. |
#17
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'No practical use' for 17-million digit prime number
Martin Bonner wrote:
That depends on who finds out how to predict where prime numbers are. Doing so would be Fields medal material (Nobel prize for mathematicians), so academics would publish like a shot. OTOH, if the discoverer works for NSA, GCHQ, Russian equivalent, Chinese equivalent, etc, they will will keep very sputum indeed. Do I detect the curse of autocorrection? ;-) Tim |
#18
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'No practical use' for 17-million digit prime number
On Sat, 9 Feb 2013 20:35:19 +0000 (UTC), Tim+
wrote: NSA, GCHQ, Russian equivalent, Chinese equivalent, etc, they will will keep very sputum indeed. Do I detect the curse of autocorrection? ;-) Who gives a spit? |
#19
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'No practical use' for 17-million digit prime number
On Saturday, February 9, 2013 8:35:19 PM UTC, Tim+ wrote:
Martin Bonner wrote: That depends on who finds out how to predict where prime numbers are. Doing so would be Fields medal material (Nobel prize for mathematicians), so academics would publish like a shot. OTOH, if the discoverer works for NSA, GCHQ, Russian equivalent, Chinese equivalent, etc, they will will keep very sputum indeed. Do I detect the curse of autocorrection? ;-) Oddly enough, no. I have no idea how that happened. I was trying for "shtum". |
#20
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'No practical use' for 17-million digit prime number
On 09/02/2013 18:11, Richard Russell wrote:
On Feb 8, 7:31 pm, Nick wrote: Because (large) prime numbers are used in all encryption systems. If it's the 'largest known prime' it's probably a Mersenne prime (2^n-1) in which case it's of no relevance to encryption, and would explain its discoverer believing it to be of "no practical use". The The practical uses that come from finding these things are the spin offs that arise out of the technology developed to make the original search possible. New algorithms, and collaborative computing efforts etc. -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#21
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'No practical use' for 17-million digit prime number
In message , Grimly
Curmudgeon writes On Fri, 8 Feb 2013 18:11:11 -0000, "ARW" wrote: http://www.bbc.co.uk/news/uk-21382663 Why is it only "thought" to be the largest prime number ever identified? It was just lying around, waiting to be discovered? Feck me. Didn't you know there were places in Dorset where they are just lying on the beach ready to be picked up -- geoff |
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